Blue matte gradient glaze ceramic and preparation method thereof

Abstract

This invention discloses a blue matte gradient glaze ceramic, comprising a ceramic body with a white base glaze and a blue top glaze on the surface. The white base glaze comprises the following components: 45-60 parts silicon dioxide, 5-20 parts aluminum oxide, 1-5 parts potassium oxide, 1-5 parts sodium oxide, 3-10 parts calcium oxide, 10-20 parts barium oxide, and 3-10 parts zirconium oxide. The blue top glaze comprises the following components: 45-60 parts silicon dioxide, 5-15 parts aluminum oxide, 1-5 parts potassium oxide, 0.5-3 parts sodium oxide, and 3-10 parts calcium oxide. The glaze layer of this invention gradually thins from the center to the edge. This change in glaze thickness causes the glaze color to gradually lighten from the center to the edge. Furthermore, the water-soluble cobalt ions and soluble salts in the blue glaze gradually diffuse to a larger area at the junction of the glaze and the base glaze, creating a difference in glaze color and achieving a multi-layered glaze effect. The resulting glaze pattern resembles a blue morning glory, possessing a unique artistic effect.

Description

Technical Field

[0001] This invention belongs to the field of ceramic products technology, and specifically relates to a blue matte gradient glaze ceramic and its preparation method. Background Technology

[0002] Blue glaze, a common glaze in the ceramics field, has garnered significant attention and discussion due to its unique color effects and artistic expression. Its production process and forms of expression not only involve materials science and chemical processes but also incorporate artistic perception and aesthetic concepts, thus showcasing its unique charm in the field of ceramic art.

[0003] Chinese patent application CN202210807750.4 discloses a glaze with a blue-green gradient effect and its preparation method, belonging to the field of craft ceramics technology. The glaze with the blue-green gradient effect comprises a blue base glaze and a green top glaze. The blue base glaze comprises the following percentages of raw materials: SiO2 61-64%, Al2O3 7-9%, CaO 3.5-5%, MgO 3-4.5%, K2O 3.5-5.5%, Na2O 3-5%, BaO 5-7%, ZnO 4-6%, B2O3 4.5-6%, and blue pigment 5-8%. The green top glaze comprises the following percentages of raw materials: SiO2 61-64%, Al2O3 7-9%, CaO 3.5-5%, MgO 3-4.5%, K2O 3.5-5.5%, Na2O 3-5%, BaO 5-7%, ZnO 4-6%, and B2O3. 4.5-6%, green pigment 2-3%. This application uses a method of spraying a dark blue glaze first and then a light green glaze. First, the blue base glaze is sprayed on the rim of the product using a misting spraying technique, and the thickness gradually decreases from the rim to the middle of the product until it disappears. After the blue base glaze is sprayed, the green top glaze is sprayed from the bottom using a misting spraying technique, and the thickness of the glaze layer gradually decreases from the bottom to the middle of the product until it disappears. This application places the glaze with strong color development ability at the bottom and the glaze with weak color development and covering power on the top layer, so that the glaze color forms a harmonious and orderly natural transition effect. However, the finishing technique of the gradient glaze surface of this application is too complicated and is not conducive to the mass production of the product. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a blue matte gradient glaze ceramic and its preparation method, resulting in a gradient glaze ceramic.

[0005] The technical solution of the present invention is as follows:

[0006] One of the objectives of this invention is to provide a blue matte gradient glaze ceramic, comprising a ceramic body, the surface of which has a white base glaze and a blue surface glaze;

[0007] The white base glaze, by weight, comprises the following components: 45-60 parts silicon dioxide, 5-20 parts aluminum oxide, 1-5 parts potassium oxide, 1-5 parts sodium oxide, 3-10 parts calcium oxide, 10-20 parts barium oxide, and 3-10 parts zirconium oxide.

[0008] The blue glaze, by weight, comprises the following components: 45-60 parts silicon dioxide, 5-15 parts aluminum oxide, 1-5 parts potassium oxide, 0.5-3 parts sodium oxide, 3-10 parts calcium oxide, 1-5 parts magnesium oxide, 20-30 parts zinc oxide, 0.1-1 parts cobalt oxide, and 0.03-0.4 parts divalent cobalt soluble salt.

[0009] Furthermore, the divalent cobalt soluble salt is cobalt chloride.

[0010] The second objective of this invention is to provide a method for preparing blue matte gradient glaze ceramics, comprising the following steps:

[0011] S1: Weigh the raw materials of white base glaze according to the set weight proportions, add water and ball mill to obtain white base glaze, set aside;

[0012] S2: Weigh the raw materials for the blue glaze according to the set weight proportions, add water and ball mill to obtain the blue glaze, and set aside;

[0013] S3: Apply the white base glaze obtained in step S1 to the surface of the ceramic body and dry it;

[0014] S4: Apply the blue glaze obtained in step S2 to a portion of the white base glaze and allow it to dry.

[0015] S5: The blank obtained in step S4 is sent into the kiln for firing. After being removed from the kiln and cooled, a blue matte gradient glaze ceramic product is obtained.

[0016] Furthermore, in step S1, the white base glaze is passed through a 160-mesh sieve, and the residue of the white base glaze on the 10,000-mesh sieve is 0.2-0.4%; in step S2, the blue surface glaze is passed through a 120-mesh sieve, and the residue of the blue surface glaze on the 10,000-mesh sieve is 0.3-0.5%.

[0017] Furthermore, in step S1, the Baumé degree of the white base glaze is controlled at 54-56°, and the specific gravity of the glaze is controlled at 1.60g / ml; in step S2, the Baumé degree of the blue surface glaze is controlled at 50-52°, and the specific gravity of the glaze is controlled at 1.55g / ml.

[0018] Furthermore, in step S3, the ceramic body is glazed by dipping or spraying, with a glaze thickness of 0.4-1mm.

[0019] Furthermore, the specific process of applying glaze to the ceramic body using spray glazing is as follows: the spray glaze atomization effect is achieved by spraying at the midpoint, and 3-4 coats are applied.

[0020] Furthermore, in step S4, the blue glaze is applied to specific areas of the white base glaze using methods such as dripping, splashing, or painting.

[0021] Furthermore, in step S5, the firing temperature is 1240-1260℃.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This invention provides a blue matte gradient glaze ceramic, in which cobalt oxide and divalent cobalt soluble salts are added to the blue surface glaze. When the blue surface glaze is applied to a local area of ​​the white base glaze, it undergoes two processes. First, as the blue surface glaze comes into contact with the white base glaze, the thickness of the blue surface glaze gradually decreases from the center to the edge. This change in glaze thickness causes the glaze color to gradually lighten from the center to the edge, creating a gradient effect of blue color. Second, the water-soluble cobalt ions and soluble salts in the blue surface glaze gradually diffuse to a larger area at the edge of the surface glaze, thereby creating a difference in glaze color effect and achieving a multi-layered glaze color effect. The resulting glaze pattern resembles a blue morning glory, possessing a unique artistic effect.

[0024] 2. The white base glaze used in this invention is a barium-calcium matte base glaze, with a certain amount of zirconium introduced for whitening, achieving a white effect on the glaze surface. The blue surface glaze is a zinc-calcium matte surface glaze, which has a strong tendency to crystallize and has a significantly different composition from the base glaze. By layering the two glazes with different thicknesses and compositions in a progressive manner, the activity and kiln transformation characteristics of the combined glaze are further improved, thereby achieving the goal of making the glaze surface effect richer.

[0025] 3. The present invention provides a method for preparing blue matte gradient glaze ceramics. The method is simple, the process is short, and the cost is low. The resulting gradient glaze ceramics have a color that changes from dark to light, resembling a blue morning glory, and have a unique artistic effect and ornamental value. Moreover, the blue matte gradient glaze ceramics prepared by this method have a stable effect and can be mass-produced. Attached Figure Description

[0026] Figure 1 This is a process flow diagram of a method for preparing a blue matte gradient glaze ceramic. Detailed Implementation

[0027] The following describes a preferred embodiment, with reference to the appendix. Figure 1To further illustrate the present invention, the endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values; for numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be considered as specifically disclosed herein; the materials, reagents, etc. used in the following embodiments are commercially available unless otherwise specified; the experimental methods in the following embodiments are conventional methods unless otherwise specified.

[0028] Example 1

[0029] This embodiment provides a blue matte gradient glaze ceramic, including a ceramic body with a white base glaze and a blue surface glaze on the surface of the ceramic body;

[0030] The white base glaze, by weight, comprises the following components:

[0031] Table 1. Components of White Base Glaze

[0032]

[0033]

[0034] The blue glaze, by weight, comprises the following components:

[0035] Table 2 Components of Blue Glaze

[0036] Alumina 9.19 copies potassium oxide 3.74 copies Sodium oxide 1.2 portions Calcium oxide 7.34 copies magnesium oxide 2.24 copies Zinc oxide 24.31 copies cobalt oxide 0.37 copies Divalent cobalt soluble salts 0.16 copies

[0037] In this embodiment, the divalent cobalt soluble salt is cobalt chloride.

[0038] In this embodiment, the white base glaze is a barium-calcium matte base glaze, and a certain amount of zirconium is introduced for whitening, thus achieving a white effect on the glaze surface. The blue surface glaze is a zinc-calcium matte surface glaze, which has a strong tendency to crystallize and has a significantly different composition from the base glaze. By layering the two glazes with different thicknesses and compositions in a progressive manner, the activity and kiln transformation characteristics of the combined glaze are further improved, thereby achieving the goal of making the glaze surface effect richer.

[0039] This embodiment also provides a method for preparing blue matte gradient glaze ceramic, including the following steps:

[0040] S1: Weigh the raw materials of white base glaze according to the set weight proportions, add water and ball mill, and pass through a 160-mesh sieve to obtain white base glaze for later use. The white base glaze has a 10,000-mesh sieve residue of 0.3%, a Baumé degree of 55°, and a glaze water specific gravity of 1.60 g / ml.

[0041] S2: Weigh the raw materials of blue glaze according to the set weight proportions, add water and ball mill, and pass through a 120-mesh sieve to obtain blue glaze for later use. The blue glaze has a 10,000-mesh sieve residue of 0.4%, a Baumé degree of 51°, and a glaze water specific gravity of 1.55 g / ml.

[0042] S3: Apply the white base glaze obtained in step S1 to the surface of the ceramic body by glazing, with a glaze thickness of 0.6 mm, and then dry it.

[0043] S4: Using the drip glaze method, decorate a portion of the white base glaze with the blue surface glaze obtained in step S2, and then dry it;

[0044] S5: The blank obtained in step S4 is sent into the kiln for firing at a temperature of 1250℃. After being removed from the kiln and cooled, a blue matte gradient glaze ceramic product is obtained.

[0045] The preparation method provided in this embodiment is simple, has a short process flow, and low cost. The resulting gradient glaze ceramic has a color that changes from dark to light, resembling a blue morning glory, and has a unique artistic effect and ornamental value. Moreover, the blue matte gradient glaze ceramic prepared by this method has a stable effect and can be mass-produced.

[0046] In this embodiment, cobalt oxide and divalent cobalt soluble salts are added to the blue glaze. In step S4, when the blue glaze is applied to a local area of ​​the white base glaze, it undergoes two processes. First, as the blue glaze comes into contact with the white base glaze, the thickness of the blue glaze layer gradually decreases from the center to the edge. This change in glaze thickness causes the glaze color to gradually lighten from the center to the edge, creating a gradient effect of blue glaze color. Second, the water-soluble cobalt ions and soluble salts in the blue glaze gradually diffuse to a larger area at the edge of the glaze, thus creating a difference in glaze color effect and achieving a multi-layered glaze color effect. The resulting glaze pattern resembles a blue morning glory, possessing a unique artistic effect.

[0047] Example 2

[0048] This embodiment provides a blue matte gradient glaze ceramic, including a ceramic body with a white base glaze and a blue surface glaze on the surface of the ceramic body;

[0049] The white base glaze, by weight, comprises the following components:

[0050] Table 3 Components of White Base Glaze

[0051] Alumina 5.9 copies potassium oxide 1.2 portions Sodium oxide 1.6 copies Calcium oxide 3.5 copies Barium oxide 10.7 copies Zirconia 3 copies

[0052] The blue glaze, by weight, comprises the following components:

[0053] Table 4 Blue Glaze Components

[0054] Alumina 5.3 copies potassium oxide 1.4 copies Sodium oxide 0.5 copies Calcium oxide 3 copies magnesium oxide 1.6 copies Zinc oxide 20 copies cobalt oxide 0.1 copies Divalent cobalt soluble salts 0.043 copies

[0055] In this embodiment, the divalent cobalt soluble salt is cobalt chloride.

[0056] This embodiment also provides a method for preparing blue matte gradient glaze ceramic, including the following steps:

[0057] S1: Weigh the raw materials of white base glaze according to the set weight proportions, add water and ball mill, and pass through a 160-mesh sieve to obtain white base glaze for later use. The white base glaze has a 10,000-mesh sieve residue of 0.2%, a Baumé degree of 54°, and a glaze water specific gravity of 1.60 g / ml.

[0058] S2: Weigh the raw materials of blue glaze according to the set weight proportions, add water and ball mill, and pass through a 120-mesh sieve to obtain blue glaze for later use. The blue glaze has a 10,000-mesh sieve residue of 0.3%, a Baumé degree of 50°, and a glaze water specific gravity of 1.55 g / ml.

[0059] S3: Apply the white base glaze obtained in step S1 to the surface of the ceramic body by spraying glaze. The spraying atomization effect is achieved by spraying the center point, and three coats are applied. The thickness of the glaze is 0.4 mm, and then it is dried.

[0060] S4: Using the glazing method, decorate a portion of the white base glaze with the blue surface glaze obtained in step S2, and then dry it;

[0061] S5: The blank obtained in step S4 is sent into the kiln for firing at a temperature of 1240℃. After being removed from the kiln and cooled, a blue matte gradient glaze ceramic product is obtained.

[0062] Example 3

[0063] This embodiment provides a blue matte gradient glaze ceramic, including a ceramic body with a white base glaze and a blue surface glaze on the surface of the ceramic body;

[0064] The white base glaze, by weight, comprises the following components:

[0065] Table 5. Components of White Base Glaze

[0066]

[0067]

[0068] The blue glaze, by weight, comprises the following components:

[0069] Table 6 Blue Glaze Components

[0070] Alumina 14.7 copies potassium oxide 4.9 copies Sodium oxide 3 copies Calcium oxide 9.5 copies magnesium oxide 5 copies Zinc oxide 29.7 copies cobalt oxide 1 copy Divalent cobalt soluble salts 0.4 copies

[0071] In this embodiment, the divalent cobalt soluble salt is cobalt chloride.

[0072] This embodiment also provides a method for preparing blue matte gradient glaze ceramic, including the following steps:

[0073] S1: Weigh the raw materials of white base glaze according to the set weight proportions, add water and ball mill, and pass through a 160-mesh sieve to obtain white base glaze for later use. The white base glaze has a 10,000-mesh sieve residue of 0.4%, a Baumé degree of 56°, and a glaze water specific gravity of 1.60 g / ml.

[0074] S2: Weigh the raw materials of blue glaze according to the set weight proportions, add water and ball mill, and pass through a 120-mesh sieve to obtain blue glaze for later use. The blue glaze has a 10,000-mesh sieve residue of 0.5%, a Baumé degree of 52°, and a glaze water specific gravity of 1.55 g / ml.

[0075] S3: Apply the white base glaze obtained in step S1 to the surface of the ceramic body by spraying glaze. The spraying atomization effect is achieved by spraying the center point, and the glaze is sprayed 4 times. The glaze thickness is 1mm, and then it is dried.

[0076] S4: Using a painting method, decorate a portion of the white base glaze with the blue glaze obtained in step S2, and then let it dry.

[0077] S5: The blank obtained in step S4 is sent into the kiln for firing at a temperature of 1260℃. After being removed from the kiln and cooled, a blue matte gradient glaze ceramic product is obtained.

[0078] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A blue matte gradient glaze ceramic comprising a ceramic body, characterized in that, The ceramic body has a white base glaze and a blue surface glaze. The white base glaze, by weight, comprises the following components: 45-60 parts silicon dioxide, 5-20 parts aluminum oxide, 1-5 parts potassium oxide, 1-5 parts sodium oxide, 3-10 parts calcium oxide, 10-20 parts barium oxide, and 3-10 parts zirconium oxide. The blue glaze, by weight, comprises the following components: 45-60 parts silicon dioxide, 5-15 parts aluminum oxide, 1-5 parts potassium oxide, 0.5-3 parts sodium oxide, 3-10 parts calcium oxide, 1-5 parts magnesium oxide, 20-30 parts zinc oxide, 0.1-1 parts cobalt oxide, and 0.03-0.4 parts divalent cobalt soluble salt.

2. The blue matte gradient glaze ceramic according to claim 1, characterized in that, The divalent cobalt soluble salt is cobalt chloride.

3. The method for preparing a blue matte gradient glaze ceramic according to claim 1, characterized in that, Includes the following steps: S1: Weigh the raw materials of white base glaze according to the set weight proportions, add water and ball mill to obtain white base glaze, set aside; S2: Weigh the raw materials for the blue glaze according to the set weight proportions, add water and ball mill to obtain the blue glaze, and set aside; S3: Apply the white base glaze obtained in step S1 to the surface of the ceramic body and dry it; S4: Apply the blue glaze obtained in step S2 to a portion of the white base glaze and allow it to dry. S5: The blank obtained in step S4 is sent into the kiln for firing. After being removed from the kiln and cooled, a blue matte gradient glaze ceramic product is obtained.

4. The method for preparing a blue matte gradient glaze ceramic according to claim 3, characterized in that, In step S1, the white base glaze is passed through a 160-mesh sieve, and the residue of the white base glaze on the 10,000-mesh sieve is 0.2-0.4%; in step S2, the blue surface glaze is passed through a 120-mesh sieve, and the residue of the blue surface glaze on the 10,000-mesh sieve is 0.3-0.5%.

5. The method for preparing a blue matte gradient glaze ceramic according to claim 3, characterized in that, In step S1, the Baumé degree of the white base glaze is controlled at 54-56, and the specific gravity of the glaze is controlled at 1.60 g / ml; in step S2, the Baumé degree of the blue surface glaze is controlled at 50-52, and the specific gravity of the glaze is controlled at 1.55 g / ml.

6. The method for preparing a blue matte gradient glaze ceramic according to claim 3, characterized in that, In step S3, the ceramic body is glazed by dipping or spraying, and the glaze thickness is 0.4-1mm.

7. The method for preparing a blue matte gradient glaze ceramic according to claim 6, characterized in that, The specific process of applying glaze to ceramic blanks by spraying is as follows: the spraying atomization effect is achieved by spraying the center point, and 3-4 coats are applied.

8. The method for preparing a blue matte gradient glaze ceramic according to claim 3, characterized in that, In step S4, the blue glaze is applied to specific areas of the white base glaze using methods such as dripping, splashing, or painting.

9. The method for preparing a blue matte gradient glaze ceramic according to claim 3, characterized in that, In step S5, the firing temperature is 1240-1260℃.

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